Britannica
Encyclopedias since 1768  
ABCDEFGHIJKLMNOPQRSTUVWXYZ0-9
Ostrogorsky, Moisey ... ottava rima
Ostrogorsky, Moisey
Belorussian political scientist known for his pioneering study of comparative party organization.
Ostrogoth
member of a division of the Goths (see Goth); the Ostrogoths developed an empire north of the Black Sea in the 3rd century AD and, in the late 5th century, under Theodoric the Great, established the Gothic kingdom of Italy.
Ostroleka
city, Mazowieckie wojewodztwo (province), northeastern Poland. It lies on the eastern bank of the Narew River, 20 miles (32 km) southwest of Lomza city.
Ostrovsky, Aleksandr Nikolayevich
Russian dramatist who is generally considered the greatest representative of the Russian realistic period.
Ostrow Wielkopolski
city, Wielkopolskie wojewodztwo (province), west-central Poland. A rail junction and industrial town, it produces machine tools and railroad cars, lumber, ceramics, and textiles. The city, which lies in the south of the Great Polish Plain, was first ...
Ostrowiec Swietokrzyski
city, Swietokrzyskie wojewodztwo (province), southeastern Poland. The city lies along the Kamienna River, a tributary of the Vistula, and is situated in the Polish Uplands just north of the Swietokrzyskie ("Holy Cross") Mountains. It is noted for ...
Ostwald, Wilhelm
German chemist who almost single-handedly organized physical chemistry into a nearly independent branch of chemistry. He won the Nobel Prize for Chemistry in 1909 for his work on catalysis, chemical equilibrium, and reaction velocities.
Ostwald, Wolfgang
German chemist who devoted his life as a teacher, researcher, and editor to the advancement of colloid chemistry.
Osumi
first Earth satellite orbited by Japan. It was launched on Feb. 11, 1970, from Kagoshima Space Center on Kyushu and was named for the peninsula on which the centre is located. Osumi consisted of the fourth stage of the U.S.-built ...
Osumi Archipelago
archipelago, Kagoshima ken (prefecture), Japan, lying south of the Osumi Peninsula of Kyushu. It consists of Tanega Island and Yaku Island and several smaller isles, with a combined area of about 475 square miles (1,230 square km). The chief town ...
Osun
state, western Nigeria. Osun state was created in 1991 from the eastern third of Oyo state. It is bounded by the states of Kwara on the northeast, Ondo on the east, Ogun on the south, and Oyo on the west ...
Osuna
town, Seville provincia, in the comunidad autonoma ("autonomous community") of Andalusia, southern Spain. Osuna lies at the foot of a hill at the edge of an extensive plain, east-southeast of Seville city. Of Iberian origin, the town became the Roman ...
Oswald Of York, Saint
Anglo-Saxon archbishop of Danish parentage who was a leading figure in the 10th-century movement of monastic and feudalistic reforms.
Oswald, Lee Harvey
accused assassin of U.S. President John F. Kennedy in Dallas on Nov. 22, 1963. He himself was fatally shot two days later by Jack Ruby (1911-67) in the Dallas County Jail. A special President's Commission on the Assassination of President ...
Oswald, Saint
Anglo-Saxon king of Northumbria from 633 to 642 who introduced Celtic Christian missionaries to his kingdom and gained ascendancy over most of England.
Oswego
county, north-central New York state, U.S., bordered by Lake Ontario to the northwest and the Oswego and Oneida rivers and Oneida Lake to the south. Other waterways include the Salmon and Little Salmon rivers and the New York State Canal ...
Oswego
port city, seat (1816) of Oswego county, north-central New York, U.S. It lies along Lake Ontario at the mouth of the Oswego River, 35 miles (56 km) northwest of Syracuse. The name derives from the Iroquoian Indian word osh-we-geh, meaning ...
Oswestry
town and borough (district), administrative and historic county of Shropshire, England, bordered on three sides by Wales. Oswestry lies in a scenic setting in the foothills of the Berwyn Mountains between Wat's Dyke (c. 700) and Offa's Dyke (c. 784), ...
Oswiecim
city, Malopolskie wojewodztwo (province), southern Poland. It lies at the confluence of the Vistula and Sola rivers. A rail junction and industrial centre, the town became known as the site of an infamous Nazi extermination camp, Auschwitz-Birkenau ...
Oswiu
Anglo-Saxon king of Northumbria from 655 to 670.
Ota
city, Gumma ken (prefecture), Honshu, Japan, on the Tone River. During the Tokugawa period (1603-1867) it was a market town, a post town on the Nikko Highway, and a temple town for the Daiko Temple. Japan's first civil-aircraft manufacturing plant ...
Otago
local government region, southeastern South Island, New Zealand, encompassing the Otago Mountains, a fragmented schist plateau. The region stretches westward across South Island from the south Pacific Ocean to include the eastern slopes of the Southern Alps. It also includes ...
Otakar I
king of Bohemia (1198-1230), who won both Bohemia's autonomy from the German king and the hereditary rights to the Bohemian crown for his house of Premysl.
Otakar II
king of Bohemia (1253-78), who briefly established his crownland as the most powerful state of the Holy Roman Empire.
Otaru
city, Hokkaido, Japan, on Ishikari Bay of the Sea of Japan. Its name is a corruption of the Ainu word otarunai, meaning "sandy beach." Otaru developed as a modern town in the late 19th century. Provided with a good natural ...
Otavalo
town, north-central Ecuador, in the Andean highlands at an elevation of 8,441 feet (2,573 m). It was originally settled by the Otavalo Indians, later conquered by the Incas, and became a Spanish-controlled settlement in the 16th century. Largely destroyed in ...
Otero
county, southern New Mexico, U.S., bordered on the south by Texas. The terrain comprises drastic extremes, including elevations to 11,997 feet (3,656 m) at Sierra Blanca, extensive, waterless deserts, and tree-covered mountains. The county lies in the Basin and Range ...
Otfrid
monk of Weissenburg in Alsace and the first German poet whose name is known.
Othello
tragedy in five acts by William Shakespeare, written in 1603-04 and published in 1622 in a quarto edition from a transcript of an authorial manuscript. The text published in the First Folio of 1623 seems to have been based on ...
other minds
in philosophy, the object of the commonsensical belief that others besides oneself possess minds and are capable of thinking or feeling somewhat as one does oneself. The philosophical problem arising from the difficulty of providing adequate justification for such a ...
Otho
Roman emperor from January to April 69.
Oti River
river in West Africa, rising in the southern plain of Burkina Faso. It meanders southward, briefly flowing along the Togo-Benin border. It cuts south-southwest across northern Togo and then forms the Ghana-Togo border for about 60 miles (100 km) before ...
Otis, Elisha Graves
American inventor of the safety elevator.
Otis, Harrison Gray
American newspaper publisher who directed the Los Angeles Times from 1886 until after World War I.
Otis, Harrison Gray
Federalist political leader who championed the Hartford Convention in its opposition to mercantilist policies and the War of 1812.
Otis, James
American political activist during the period leading up to the American Revolution. He helped formulate the colonists' grievances against the British government in the 1760s.
Otis, Johnny
American bandleader, drummer, vibraphonist, singer, producer, and promoter of rhythm and blues and rock and roll. Otis was instrumental in furthering the careers of a number of important rhythm-and-blues performers.
otitid fly
any species of insect belonging to the family Otitidae (order Diptera). The wings are spotted or banded with black, brown, or yellow. These small flies are common in moist places. Little is known about their larvae; some are parasites, and ...
otitis externa
dermatitis of the external auditory canal and sometimes also of the exposed ear. The skin on these ear parts becomes dry, scaling, and itchy, and there may be foul-smelling watery or purulent discharge, pain, fever, and intermittent deafness. Predisposing factors ...
otitis media
inflammation of the lining of the middle ear and one of the most common infections in childhood. In its acute form, it commonly develops in association with an infection of the upper respiratory tract that extends from the nasopharynx to ...
Otjiwarongo
town, north-central Namibia. Otjiwarongo town (at an elevation of 4,790 feet [1,460 m]) is located in a generally flat, semiarid region of varied grasses, scrub bush, and thorn trees. Sheep and cattle are grazed in the region, which was originally ...
Otlet, Paul
Belgian lawyer and bibliographer who, with Henri-Marie Lafontaine, devised the Universal Decimal Classification (UDC) system of subject groups for library collections.
Oto
North American Indian people of the Chiwere branch (including the Missouri and Iowa) of the Siouan linguistic family. In their historic past the Oto, together with the Iowa and the Missouri, separated from the Winnebago and moved southwest. In 1673, ...
Oto-Manguean languages
a phylum, or stock, of American Indian languages made up of the following language families and groups: Oto-Pamean, Popolocan, Mixtecan, Zapotecan, Chinantecan, and Manguean. The Tlapanec and Huave language groups are sometimes also included in Oto-Manguean. The living languages of ...
otolaryngology
medical specialty concerned with the diagnosis and treatment of diseases of the ear, nose, and throat. Traditionally, treatment of the ear was associated with that of the eye in medical practice. With the development of laryngology in the late 19th ...
Otomi
Middle American Indian population living in the central plateau region of Mexico. The Otomi peoples speak at least four closely related languages, all called Otomi. A rather large number of modern Otomi no longer speak the Otomi language but continue ...
otosclerosis
ear disorder characterized by the growth of excess bone in the middle ear in the region of the oval window. It is at the oval window that the footplate of the stapes (stirrup) comes into contact with the fluids of ...
Otranto
town and archiepiscopal see, Lecce province, Puglia (Apulia) region, southeastern Italy, on the east coast of the Salentine Peninsula (the "heel" of Italy), on the Strait of Otranto (40 miles [64 km] wide), opposite Albania. It is the easternmost town ...
Otsego
county, central New York state, U.S., comprising a rugged upland region bordered by the Unadilla River to the west and the Susquehanna River to the southwest. Originating in Otsego Lake in the northern part of the county, the Susquehanna is ...
Otsu
capital, Shiga Prefecture (ken), southern Honshu, Japan, on the shore of Lake Biwa. A castle town established by Toyotomi Hideyoshi in the 16th century, it is situated at the junction of ancient highways, including the Tokaido (Eastern Sea Highway). Otsu ...
ottava rima
Italian stanza form composed of eight 11-syllable lines, rhyming abababcc. It originated in the late 13th and early 14th centuries and was developed by Tuscan poets for religious verse and drama and in troubadour songs. The form appeared in Spain ...
© 2006 Encyclopædia Britannica Australia Ltd
Encyclopedia Home | World Atlas